2024 MERCEDES-BENZ GLC 300 Complaints and Recall Information
The 2024 MERCEDES-BENZ GLC 300 has 5 complaints and 37 recalls filed with NHTSA. Owners most frequently report sudden and unexpected auto braking without nearby obstructions, causing unsafe driving conditions. There are also reports of sudden loss of power and unresponsive acceleration, which occurred while driving on highways and posed significant safety risks.
Common Issues- Unintended auto braking. The vehicle applies brakes randomly with no obstruction detected nearby, causing driver anxiety and potential collision risks.
- Sudden power loss. The engine and acceleration fail unexpectedly, often accompanied by warning messages such as "12V Battery" and "Stop - Switch Off Vehicle."
- Transmission downshifting. The transmission unexpectedly downshifts to second gear during power loss, limiting vehicle speed to around 20 mph, increasing rear-end collision risk.
- Loss of power steering and braking. Sudden power failure leads to a loss of power assist in steering and brakes, further increasing safety concerns.
- Warning system alerts. Drivers report dashboard warnings related to the battery and power system during malfunction events.
- Repeated failures. Some vehicles experience multiple sudden shutdown incidents within the first year of ownership, raising concerns about reliability.
There are 37 recalls for the 2024 GLC 300 involving various vehicle systems including steering, electrical, structural, and powertrain components. These recalls address critical safety defects that affect vehicle control, crash protection, and risk of fire or injury. Dealers provide free repairs and replacements under these recalls.
Recalls- Steering coupling bolt (NHTSA 25V533000). 3,749 vehicles affected by improperly tightened steering coupling bolts which can loosen and cause steering loss. Dealers will tighten bolts free of charge. No "Do Not Drive" advisory issued.
- Incorrect fuse box installation (NHTSA 25V255000). 443 vehicles equipped with an incorrect fuse box installed during earlier repairs, risking sudden power loss, restraint system failure, or fire. Dealers will inspect and replace fuse boxes free of charge.
- Panoramic sunroof C-pillar trim (NHTSA 25V379000). 92,851 vehicles with inadequate impact absorption in the C-pillar during certain crashes, failing FMVSS 201 requirements. Dealers will modify roof lining and trim free of charge.
- Integral carrier weld failure (NHTSA 24V658000). 4 vehicles at risk of engine support failure due to improper welds, which can cause loss of vehicle control. Dealers will replace the integral carrier free of charge.
- Rear axle differential bolts (NHTSA 24V862000). 3 vehicles have bolts that may come loose, risking driveshaft separation and loss of drive power. Dealers will repair bolt connection as necessary free of charge.
- 80-amp fuse defect (NHTSA 24V115000). 31,848 vehicles with potentially defective 80-amp fuses that may fail and cause sudden power loss or fire risk. Fuse boxes will be replaced free of charge.
- Window attachment and airbag support (NHTSA 23V741000). 7 vehicles with front, rear, and fixed side windows that may detach and front airbags that may not be properly supported during deployment. Dealers will inspect and replace windows as needed free of charge.
Owners dealing with repeated repairs related to sudden power loss, safety system malfunctions, or unresolved recall issues should consider consulting their state’s lemon law resources to understand their rights and possible remedies.
2024 MERCEDES-BENZ GLC 300 Summary
2024
Model Year
5
Total Complaints
7
Total Recalls
128905
Vehicles Affected
Recalls
2024 MERCEDES-BENZ GLC 300
3749 vehicles affected
STEERING:CRITICAL FASTENERS
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2026 EQE and GLC vehicles. Please see the recall report for a complete list of models. The steering coupling bolt may have been improperly tightened, allowing the steering coupling to loosen from the steering rack.
Risk: A loose steering coupling can cause a loss of steering control, increasing the risk of a crash.
2024 MERCEDES-BENZ GLC 300
92851 vehicles affected
STRUCTURE:BODY:ROOF AND PILLARS
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2025 GLC 300, GLC 300 4MATIC, 2024-2025 AMG GLC 43 4MATIC, 2025 GLC 350E 4MATIC, and AMG GLC 63 S E vehicles equipped with a panoramic sunroof. In certain crash scenarios, where the rear occupant's head contacts the C-pillar, the pillar may not absorb an adequate amount of the impact. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 201, "Occupant Protection in Interior Impact."
Risk: In the event of a crash, insufficient impact protection can increase the risk of injury.
2024 MERCEDES-BENZ GLC 300
443 vehicles affected
ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C-Class, E-Class, S-Class, SL, GLC, EQE SUV, EQE, EQS SUV, and EQS vehicles that were incorrectly repaired under recall 24V-115. An incorrect fuse box that was not designed for the vehicle may have been installed.
Risk: An incorrect fuse box can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.
2024 MERCEDES-BENZ GLC 300
4 vehicles affected
STRUCTURE:FRAME AND MEMBERS
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024 GLC 300 and AMG GLC 43 vehicles. The integral carrier that supports the engine may fail due to improper welds, which can cause a loss of vehicle control.
Risk: A loss of vehicle control increases the risk of a crash.
2024 MERCEDES-BENZ GLC 300
3 vehicles affected
POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024 GLC 300 4MATIC, and S 580 4MATIC vehicles. The bolts that secure the rear axle differential to the rear axle carrier may come loose, which can result in a separation of the drive shaft from the rear axle differential.
Risk: Driveshaft separation can cause a loss of drive power, increasing the risk of a crash.
2024 MERCEDES-BENZ GLC 300
31848 vehicles affected
ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C300, AMG C43, S580e, S580, Maybach S580, Maybach S680, AMG SL43, AMGSL63, GLC300, EQE350, EQE500, EQS450, EQS580, AMG EQS, 2023 S500, AMG SL55, AMG EQE, 2024 E350, E450, AMG C63e S, CLE300 Coupe, CLE450 Coupe, and GLC300 Coupe vehicles. The 80-Amp fuses may have been manufactured incorrectly, which can cause the fuses to fail.
Risk: An 80-Amp fuse that fails can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.
2024 MERCEDES-BENZ GLC 300
7 vehicles affected
VISIBILITY:WINDSHIELD
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024 GLC 300 vehicles. The front, rear, and fixed side windows may not be properly secured and can detach. In addition, the front air bags may not be properly supported by the windshield during deployment.
Risk: Detached windows may cause a road hazard and increase the risk of a crash or injury. Improperly supported air bags can increase the risk of injury during a crash.
Complaints
2024 MERCEDES-BENZ GLC 300
ID: 2115988VEHICLE SPEED CONTROL
•Incident Details: •Both sudden shutdown incidents •“12V Battery” warning (first incident) •“Stop - Switch Off Vehicle” warning (second incident) •That it happened with children in the car on a tollway Safety Concerns: •Loss of power steering/braking •Risk of collision •Repeated failures on a 1-year-old vehicle
2024 MERCEDES-BENZ GLC 300
ID: 2115987ENGINE
•Incident Details: •Both sudden shutdown incidents •“12V Battery” warning (first incident) •“Stop - Switch Off Vehicle” warning (second incident) •That it happened with children in the car on a tollway Safety Concerns: •Loss of power steering/braking •Risk of collision •Repeated failures on a 1-year-old vehicle
2024 MERCEDES-BENZ GLC 300
ID: 2115986POWER TRAIN
•Incident Details: •Both sudden shutdown incidents •“12V Battery” warning (first incident) •“Stop - Switch Off Vehicle” warning (second incident) •That it happened with children in the car on a tollway Safety Concerns: •Loss of power steering/braking •Risk of collision •Repeated failures on a 1-year-old vehicle
2024 MERCEDES-BENZ GLC 300
ID: 2071695POWER TRAIN
I am writing to report a critical safety issue with my 2024 Mercedes-Benz GLC300, VIN: [XXX] , which I purchased on [XXX], from Mercedes-Benz of Walnut Creek, CA, with 9,500 miles. On [XXX], while driving on [XXX], the vehicle suddenly lost power, the transmission downshifted to 2nd gear, and the accelerator became unresponsive. I was forced to drive at 20 mph for 20 minutes on a busy freeway, posing a severe risk of a rear-end collision. I managed to exit the freeway, but this incident could have resulted in a serious accident. This failure may be related to prior recalls of the 2024 GLC300, including issues with a defective 80-amp fuse (February 2024) and a loose 48-volt battery ground connection (March 2024), both of which can cause power loss. I urge the NHTSA to investigate this incident to determine if it warrants an expanded recall or further action to protect other drivers. I have notified Mercedes-Benz of Walnut Creek CA and Mercedes-Benz USA, demanding an investigation and a refund under the California Lemon Law. Please confirm receipt of this complaint and provide an update on any investigation. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
2024 MERCEDES-BENZ GLC 300
ID: 2068976FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I am experiencing auto braking when there are no obstructions near or around the vehicle. The auto braking is random but occurs fairly often. It is very unsettling and makes me very nervous while driving my brand new vehicle. This happens without warning and can definitely put myself and my passengers as well as passengers in the vehicles around me at great risks of collisions.